fix potential error that people get more makeups than they should

lacagette_addons/lacagette_membership/models/shift_registration.py

@@ -23,10 +23,11 @@ class ShiftRegistration(models.Model):
         absence_status = conf.get_param("lacagette_membership.absence_status")
         if 'state' in vals and vals['state'] == absence_status:
             if self.ids:
-                # it is the case when called from "absence cron job" run in external third-party
-                to_add = 2 if absence_status == 'absent' else 1
                 for s in self.env['shift.registration']\
                          .search([('id', 'in', self.ids)]):
+                    # it is the case when called from "absence cron job" run in external third-party
+                    to_add = 2 if absence_status == 'absent' else 1
+
                     # Missing a makeup leads to have an additional makeup (the shift you initialy missed + the makeup you missed)
                     if s.is_makeup is True:
                         to_add += 1